As far as most casual observers are concerned, Elon Musk jumped into the national political arena—and when I say jumped, I mean jumped, baring a blinding expanse of alabaster-white belly—almost exactly six months ago, in Butler, Pennsylvania, when he made his first appearance at a Donald Trump rally. Six months later, this past Sunday night, Musk was at it again: hopping, skipping, and flapping his arms at a campaign event in Green Bay. Only this time, Trump was nowhere to be seen; nor was Brad Schimel, the Wisconsin Supreme Court candidate Musk was ostensibly there to stump for. In fact, in the two hours Musk spent onstage, which began with him donning a foam Packers cheesehead hat, he barely mentioned Schimel, instead holding forth about Social Security fraud, global birth rates, and A.I.